When, after that first evening at the Verdurins', he had had the little phrase played over to him again, and had sought to disentangle from his confused impressions how it was that, like a perfume or a caress, it swept over and enveloped him, he had observed that it was to the closeness of the intervals between the five notes which composed it and to the constant repetition of two of them that was due that impression of a frigid, a contracted sweetness; but in reality he knew that he was basing this conclusion not upon the phrase itself, but merely upon certain equivalents, substituted (for his mind's convenience) for the mysterious entity of which he had become aware, before ever he knew the Verdurins, at that earlier party, when for the first time he had heard the sonata played.